Bananas are highly nutritious but it is a crop that is normally sprayed intensively for pests the source would have to be an source which was classed organic. Then the difficulty arises of the correct meaning of the word organic. Organic originally ment material from a source which had at one time been alive, nothing to do with the use of chemicals. Although this is the modern interpretation. I wonder how it would stand in a court of law. I personally have no confidence with the distances these fruit travel and the number of different hands they pass through before they reach the consumer. Also on that point, regulations in Britain and in France allow the classification of food as organic (in the modern sense) if the amount of pesticides used are below a limite, which is drawn by politicians rather than individuals with specific knowledge of the heal effects of these chemicals. So proceed with caution if you can't see them growing.